Summit Health, Ltd. v. Pinhas , 111 S. Ct. 1842 ( 1991 )
bcb-anesthesia-care-ltd-beverly-werries-crna-curtis-m-cravens-crna-and , 36 F.3d 664 ( 1994 )
Katzenbach v. McClung , 85 S. Ct. 377 ( 1964 )